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Writing instrument
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A technology for writing implements and writing cores, applied in writing utensils, multi-purpose writing utensils, printing, etc., can solve the problem of not being able to cover the area of the nib as a whole, and achieve the effect of not damaging the ink flow
Active Publication Date: 2022-04-05
MITSUBISHI PENCIL CO LTD
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Problems solved by technology
[0012] However, although the nibs described in the above-mentioned patent documents 2 to 4 can see the writing surface through the nib wider than the conventional patent document 1, the current situation is that it is still impossible to maximize the visibility of the writing direction. Relative to the overall area of the nib, further improvement is expected
Method used
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Embodiment 1
[0128] The use has the following structure and basis Figure 1 to Figure 4 The nib of the writing instrument, and the ink for the writing instrument of the following composition. The size and the like of the pen tip used the following sizes and the like.
[0129] (Structure of the pen tip 20)
[0130] Made of acrylic resin, visible light transmittance 85% [Reflectance was measured by a multi-light source spectrophotometer (MSC-5N) manufactured by Suga Test Instruments Co., Ltd., and then the visible light transmittance was determined. ]
[0131] The size of the visible part (window) 43 (square): 9mm x 8mm x 5mm x 4mm
[0132] Width M of the visible part: 3.0mm
[0133] Writing core 30: Structure of thin plate bodies 31, 31: sintered core made of polyethylene, width m: 2 mm, longitudinal length: 20 mm, thickness t: 0.5 mm, t: m=1: 4, writing portion 25: poly Sintered core made of vinyl, porosity: 50%, 4×3×6mm, T=3mm, W=5.5mm
[0152]has the following structure and basis Figure 5 to Figure 8 The nib writing instrument and the writing instrument ink of the following combination components. As for the size of the pen tip, the sizes shown below were used.
[0153] (Structure of the pen tip 20)
[0154] The writing core 35 is the same as the writing instrument of the above-described embodiment except that the writing core 35 has the following structure, and therefore the description thereof is omitted.
[0155] The writing instrument main body 10 , the ink absorbing body 15 , the holding body 40 , the ink composition components, etc.: the same as the above-mentioned Embodiment 1 or manufactured according to the above-mentioned Embodiment 1.
[0156] The size of the visible part (window) 43 (square): 9mm x 8mm x 5.2mm x 4.2mm
[0157] Width M of the visible part: 3.0mm
[0158] Writing core 35: Structure of sheet body 37: Sintered core made of polyethylene, width m: 2 mm, longitudinal length: 20 mm, ...
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Abstract
The invention provides a writing instrument which has a pen tip that maximizes the effective area of a visible part with respect to the entire pen tip, said visible part being capable of visually confirming the writing direction, without impairing the ink outflow property. This writing instrument (A) is provided with a pen tip (20) that guides ink supplied from a writing instrument main body (10) and has a visible section through which the writing direction can be visually confirmed, and the pen tip (20) is provided with at least a holding body (40) having a visible section and a writing section (25) in which a writing core (30) having a U-shaped or L-shaped outer shape is attached to the holding body (40). The portion of the writing core (30), which is in contact with the side surface of the holder (40), has a rectangular cross-section.
Description
technical field [0001] The present specification relates to a writing instrument having a pen tip that enables visual confirmation of the writing direction, and more particularly, to a relative pen tip having a visible portion that maximizes the visual confirmation of the writing direction without impairing ink flow. The overall effective area of the nib of the writing instrument. Background technique [0002] Conventionally, the pen tips of writing instruments such as paint markers and underline markers are widely used because they have a wide refill and can draw a wide line, and have excellent marking visibility and workability. [0003] In the case of the pen tip of a writing instrument such as a marker pen, writing is generally possible by applying a capillary action to a porous member made of synthetic resin, whereby ink supplied from a rod body serving as the main body of the writing instrument is led out to the pen tip. A member in which fibers and the like are agg...
Claims
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Application Information
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